Voltage multiplier



Feb. 22 CANADY VOLTAGE MULTIPLIER 2 Sheets-Sheet l Filed Jan. 14, 1947 Ed -Iii 9w an T Y E 1949' D. CANADY 2,462,804

VOLTAGE MULTIPLIER Filed Jan. 14, 1947 2 Sheets-Sheet 2 Fig: 8

IN VEN TOR.

,Don Caz/ ad ATTORNEY Patented Feb. 22, 1949 UNITED VOLTAGE MULTIPLIER Don Canady, Cincinnati, Ohio, assignor to Dayton Acme Company, Cincinnati, Ohio, a corporation of Ohio Application January 14, 1947, Serial No. 721,967

1 Claim. 1

This invention relates to improved simplified means to increase direct current voltage. Heretofore expensive equipment was needed to increase the voltage such as is needed in photoelectric cell pickup for sound projection.

The object of my invention is to provide a unit for alternately collecting the applied voltage in a plurality of condensers and alternately discharging the voltage from the condensers to multiply the voltage discharged.

A further object is to provide rotary means for alternately collecting and discharging the applied voltage.

,My invention will be further readily understood from the following description and claim and from the drawings in which latter:

Fig. l is a plan view of one form of my improved device.

Fig. 2 is a detail section, taken in the plane of the line 2-2 of Fig. 1.

Fig. 3 is a diagrammatic view of the same.

Fig. 4 is a diagrammatic view of a modification of my invention.

Fig. 5 is a wiring diagram, showing the collecting circuit.

Fig. 6 is a Wiring diagram, showing the discharge circuit.

Fig. 7 is a wiring diagram of the modification shown in Fig. 4.

Fig. 8 is a plan view of a further modification of my invention, taken in the plane of the ir regular line 88 of Fig. 9.

Fig. 9 is a vertical section of the same, taken in the plane of the line 99 of Fig. 8.

Fig. 10 is a detail section, taken in the plane of the line Ill-Ill of Fig. 9.

Fig. 11 is a wiring diagram of the same.

My improved structure comprises a rotary member 15 of insulating material mounted on a shaft 16 which can be suitably driven from any power source. Collector rings [1 and I8 are secured to the insulated member and split rings I9, 29, 2|, 22, 23, 24, 25, and 26 which are formed in two parts with gaps between the ends of the respective rings. A pair of rings 21 and 28 are arranged to discharge the increased voltage. Brushes 30, 3|, 32, 33, 34, 35, 36, and 31 contact the respective collector rings with the power source connected to brushes 30 and 3|. The ring IT is connected to the split rings l9 and 23 by a connection 38 and the ring I B is connected to the split rings 2| and 25 by a connection 39. The split ring is connected to the discharge ring 28 by a connection 49 and the rings 22 and 24 are connected together by a connection 4| with the ring 26 connected to the discharge ring 21 by a connection 42. The brushes 32 and 33 are connected together with a condenser 43 interposed in the line 44. The brushes 34 and 35 are connected together with a condenser 55 interposed in the line 46. The brushes 36 and 31 have feed lines 41 and 48 extending therefrom with a condenser 49 across the lines.

Assuming the source voltage is 400 volts D. C. and the brushes 32 and 33 are contacting the rings is and 21 and the brushes 34 and 35 are contacting the rings 23 and 25 the condensers 43 and 45 are in parallel relation and will each become loaded with 400 volts. As the rotary member rotates the brushes 32 and 33 will contact the rings 20 and 22 and the brushes 34 and 35 will contact the rings 24 and 26 thus placing the condensers 43 and '45 in. series whereby they will discharge 800 volts into the condenser 49 which can then be discharged into the line. In Fig. l I have shown two units coupled together in which case if the source voltage is 400 volts D. C., the final discharge will be 1600 volts D. C.

In the modification shown in Fig. 4 a pair of spaced ring members 59 and 5| are included between the ends of rings 22 and 24', with a re sistance 52 across the two ring members, which slows down or causes a delayed action to the passage of the voltage. This is also shown in the wiring diagram of Fig. 7.

The device shown in. Figs. 8 to 11 inclusive opcrates in a similar manner to that shown in Fig. 1 except in this structure a cam 15 rotates to alternately charge the condensers l6 and H by means of the contacts 18 contacting the contacts 19 and to discharge the voltage from the condensers I6 and 11 into the condenser 89 when contacting the contacts 8|. Thus when the cam is in the position shown in Fig. 9 the condensers l6 and H are connected parallel and when the contacts 18 are contacting the contacts 3! the condensers are in series to discharge into the condenser 80.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

A voltage multiplier comprising a rotary memher, a pair of collector rings onv one end of said member, a second pair of discharge collector rings on the other end of said rotary member, split rings between said pairs of rings, brushes contacting all of said rings, said brushes contacting said first named pair of collector rings brushes contacting said intermediate split rings REFERENCES CITED The following references are of record in the file of this patent:

5 UNITED STATES PATENTS Number Name Date 464,822 Edison Dec. 8, 1891 472,193 Marshall Apr. 5, 1892 10 2,047,463 Dubilier July 14, 1936 

